The Wacker Neuson Throttle Valve Returning Spring is a genuine OEM component designed for a wide range of Wacker Neuson equipment, including MG5 portable generators, MDP3 trash pumps, MPU 29 reversible plates, and ML440 light towers. As a direct OEM replacement, this spring is manufactured to the same specifications as the original part, ensuring correct tension and travel for the throttle valve assembly. Verified against Wacker Neuson's own parts documentation, part covers an extensive range of models across the MG5, MG5sd, MG5d, MDP3, MPU 29, and ML440 series.
Key Features
- Correct Spring Tension for Throttle Control — Engineered to OEM tension specifications, this returning spring delivers the precise return force needed for consistent throttle valve response across each supported model.
- Genuine Wacker Neuson OEM Part — Sourced directly from Wacker Neuson, part number 5000404214 meets the original design intent — no substitutions, no compromises on spring rate or material grade.
- Broad Cross-Series Compatibility — A single part number covers MG5 and MG5sd portable generators, MDP3 trash pumps, MPU 29 reversible plates, and ML440 light towers, making it a practical stock item for mixed Wacker Neuson fleets.
- Restores Smooth Throttle Operation — A worn or weakened returning spring causes sluggish throttle response or failure to return to idle, leading to erratic engine speed. Replacing it with 5000404214 restores crisp, predictable throttle behavior.
- Fuel System Integrity — Proper spring return tension keeps the throttle valve seated correctly at idle, which is important for stable fuel delivery and preventing uncontrolled engine speed fluctuations.
The throttle valve returning spring is a small but essential component in the carburetor or throttle body assembly. Its job is to pull the throttle valve back to the closed or idle position once input is released, maintaining controlled engine speed. When this spring loses tension, stretches, or breaks, the throttle may stick open or fail to return smoothly to idle — causing unstable operation, increased fuel consumption, or potential engine overspeed. Replacing a fatigued spring promptly keeps the engine responding correctly and protects the wider fuel and governor system from secondary wear.
Part Details
| Part Number | 5000404214 |
|---|---|
| Old Part Number | 0404214 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Throttle Valve Returning Spring |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Light Towers | ML440 | 5000630117, 5000630204, 5000630323, 5000630324, 5000630325, 5000630327 |
| Portable Generators | MG5 | 5000630137, 5000630143, 5000630233, 5000630254, 5000630224, 5000630229, 5000630237, 5000630239, 5000630252, 5000630308, 5000630310, 5000630334 |
| Trash Pumps | MDP3 | 5000630140, 5000630144, 5000630176, 5000630177 |
| Reversible Plates | MPU 29 | 5000630141, 5000630228 |
| Portable Generators | MG5sd | 5000630202, 5000630214, 5000630236 |
| MG5 Generator | MG5d | 5000630211 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
Wacker Neuson
Wacker Neuson 5000404050 Throttle Valve Returning Spring
